Ortega Toro, R.; Collazo-Bigliardi, S.; Talens Oliag, P.; Chiralt, A. (2015). Influence of citric acid on the properties and stability of starch-polycaprolactone based films. Journal of Applied Polymer Science. 133(2):1-16. doi:10.1002/app.42220
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/75105
Title:
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Influence of citric acid on the properties and stability of starch-polycaprolactone based films
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Author:
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Ortega Toro, Rodrigo
Collazo-Bigliardi, Sofía
Talens Oliag, Pau
Chiralt, A.
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UPV Unit:
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Universitat Politècnica de València. Departamento de Tecnología de Alimentos - Departament de Tecnologia d'Aliments
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Issued date:
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Abstract:
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[EN] The influence of citric acid (CA) on structural and physicochemical properties of blend films based on corn starch and polycaprolactone (PCL) was studied. Films were obtained by melt blending of starch and PCL and ...[+]
[EN] The influence of citric acid (CA) on structural and physicochemical properties of blend films based on corn starch and polycaprolactone (PCL) was studied. Films were obtained by melt blending of starch and PCL and compression molding. Phase separation of polymers observed by scanning electron microscope and atomic force microscope was reduced by CA incorporation. CA affected both starch and PCL crystallization as deduced from the X-ray diffraction patterns and values of melting enthalpy. Glass transition of starch was reduced by PCL incorporation, while this occurred to a greater extent in films containing CA. Obtained results point to enhanced interactions between PCL and starch chains in films with CA, although this only quantitatively benefits the film properties at a low PCL ratio. Compounding starch with small amounts of PCL, using glycerol and CA, can supply films with better functional properties than net starch films.
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Subjects:
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Biodegradable
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Blends
,
Compatibilization
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Films
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Molding
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Electron Microscopy Service of the UPV
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Copyrigths:
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Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
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Source:
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Journal of Applied Polymer Science. (issn:
0021-8995
) (eissn:
1097-4628
)
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DOI:
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10.1002/app.42220
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Publisher:
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Wiley
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Publisher version:
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https://dx.doi.org/10.1002/app.42220
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Project ID:
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MEC/AGL2010-20694 AGL2013-42989-R
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Thanks:
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The authors acknowledge the financial support from the Spanish Ministerio de Educacion y Ciencia throughout the projects AGL2010-20694 and AGL2013-42989-R. Rodrigo Ortega-Toro thanks the Conselleria de Educacio de la ...[+]
The authors acknowledge the financial support from the Spanish Ministerio de Educacion y Ciencia throughout the projects AGL2010-20694 and AGL2013-42989-R. Rodrigo Ortega-Toro thanks the Conselleria de Educacio de la Comunitat Valenciana for the Santiago Grisolia grant. Authors also thank the Electron Microscopy Service of the UPV for their technical assistance.
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Type:
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Artículo
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